From f0ec16e0035297f89177beaeb55995fae4131926 Mon Sep 17 00:00:00 2001

From: Kevin Wolf <kwolf@redhat.com>

Date: Tue, 26 Jun 2018 09:48:04 +0200

Subject: [PATCH 096/268] job: Move state transitions to Job

RH-Author: Kevin Wolf <kwolf@redhat.com>

Message-id: <20180626094856.6924-22-kwolf@redhat.com>

Patchwork-id: 81093

O-Subject: [RHV-7.6 qemu-kvm-rhev PATCH v2 21/73] job: Move state transitions to Job

Bugzilla: 1513543

RH-Acked-by: Jeffrey Cody <jcody@redhat.com>

RH-Acked-by: Max Reitz <mreitz@redhat.com>

RH-Acked-by: Fam Zheng <famz@redhat.com>

This moves BlockJob.status and the closely related functions

(block_)job_state_transition() and (block_)job_apply_verb to Job. The

two QAPI enums are renamed to JobStatus and JobVerb.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>

Reviewed-by: Max Reitz <mreitz@redhat.com>

Reviewed-by: John Snow <jsnow@redhat.com>

Reviewed-by: Eric Blake <eblake@redhat.com>

(cherry picked from commit a50c2ab858fe613fb805e53b4f6b970ab936706d)

Signed-off-by: Kevin Wolf <kwolf@redhat.com>

Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>

---

 block/trace-events       |   2 -

 blockjob.c               | 102 +++++++++++------------------------------------

 include/block/blockjob.h |   3 --

 include/qemu/job.h       |  13 ++++++

 job.c                    |  56 ++++++++++++++++++++++++++

 qapi/block-core.json     |  16 ++++----

 tests/test-blockjob.c    |  39 +++++++++---------

 trace-events             |   4 ++

 8 files changed, 123 insertions(+), 112 deletions(-)

diff --git a/block/trace-events b/block/trace-events

index f8c50b4..93b9279 100644

--- a/block/trace-events

+++ b/block/trace-events

@@ -6,8 +6,6 @@ bdrv_lock_medium(void *bs, bool locked) "bs %p locked %d"

 # blockjob.c

 block_job_completed(void *job, int ret, int jret) "job %p ret %d corrected ret %d"

-block_job_state_transition(void *job,  int ret, const char *legal, const char *s0, const char *s1) "job %p (ret: %d) attempting %s transition (%s-->%s)"

-block_job_apply_verb(void *job, const char *state, const char *verb, const char *legal) "job %p in state %s; applying verb %s (%s)"

 # block/block-backend.c

 blk_co_preadv(void *blk, void *bs, int64_t offset, unsigned int bytes, int flags) "blk %p bs %p offset %"PRId64" bytes %u flags 0x%x"

diff --git a/blockjob.c b/blockjob.c

index c69b2e7..0fba01e 100644

--- a/blockjob.c

+++ b/blockjob.c

@@ -41,61 +41,6 @@

  * block_job_enter. */

 static QemuMutex block_job_mutex;

-/* BlockJob State Transition Table */

-bool BlockJobSTT[BLOCK_JOB_STATUS__MAX][BLOCK_JOB_STATUS__MAX] = {

-                                          /* U, C, R, P, Y, S, W, D, X, E, N */

-    /* U: */ [BLOCK_JOB_STATUS_UNDEFINED] = {0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0},

-    /* C: */ [BLOCK_JOB_STATUS_CREATED]   = {0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1},

-    /* R: */ [BLOCK_JOB_STATUS_RUNNING]   = {0, 0, 0, 1, 1, 0, 1, 0, 1, 0, 0},

-    /* P: */ [BLOCK_JOB_STATUS_PAUSED]    = {0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0},

-    /* Y: */ [BLOCK_JOB_STATUS_READY]     = {0, 0, 0, 0, 0, 1, 1, 0, 1, 0, 0},

-    /* S: */ [BLOCK_JOB_STATUS_STANDBY]   = {0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0},

-    /* W: */ [BLOCK_JOB_STATUS_WAITING]   = {0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0},

-    /* D: */ [BLOCK_JOB_STATUS_PENDING]   = {0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0},

-    /* X: */ [BLOCK_JOB_STATUS_ABORTING]  = {0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0},

-    /* E: */ [BLOCK_JOB_STATUS_CONCLUDED] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1},

-    /* N: */ [BLOCK_JOB_STATUS_NULL]      = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},

-};

-

-bool BlockJobVerbTable[BLOCK_JOB_VERB__MAX][BLOCK_JOB_STATUS__MAX] = {

-                                          /* U, C, R, P, Y, S, W, D, X, E, N */

-    [BLOCK_JOB_VERB_CANCEL]               = {0, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0},

-    [BLOCK_JOB_VERB_PAUSE]                = {0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0},

-    [BLOCK_JOB_VERB_RESUME]               = {0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0},

-    [BLOCK_JOB_VERB_SET_SPEED]            = {0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0},

-    [BLOCK_JOB_VERB_COMPLETE]             = {0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0},

-    [BLOCK_JOB_VERB_FINALIZE]             = {0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0},

-    [BLOCK_JOB_VERB_DISMISS]              = {0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0},

-};

-

-static void block_job_state_transition(BlockJob *job, BlockJobStatus s1)

-{

-    BlockJobStatus s0 = job->status;

-    assert(s1 >= 0 && s1 <= BLOCK_JOB_STATUS__MAX);

-    trace_block_job_state_transition(job, job->ret, BlockJobSTT[s0][s1] ?

-                                     "allowed" : "disallowed",

-                                     BlockJobStatus_str(s0),

-                                     BlockJobStatus_str(s1));

-    assert(BlockJobSTT[s0][s1]);

-    job->status = s1;

-}

-

-static int block_job_apply_verb(BlockJob *job, BlockJobVerb bv, Error **errp)

-{

-    assert(bv >= 0 && bv <= BLOCK_JOB_VERB__MAX);

-    trace_block_job_apply_verb(job, BlockJobStatus_str(job->status),

-                               BlockJobVerb_str(bv),

-                               BlockJobVerbTable[bv][job->status] ?

-                               "allowed" : "prohibited");

-    if (BlockJobVerbTable[bv][job->status]) {

-        return 0;

-    }

-    error_setg(errp, "Job '%s' in state '%s' cannot accept command verb '%s'",

-               job->job.id, BlockJobStatus_str(job->status),

-               BlockJobVerb_str(bv));

-    return -EPERM;

-}

-

 static void block_job_lock(void)

 {

     qemu_mutex_lock(&block_job_mutex);

@@ -257,7 +202,7 @@ static void block_job_detach_aio_context(void *opaque);

 void block_job_unref(BlockJob *job)

 {

     if (--job->refcnt == 0) {

-        assert(job->status == BLOCK_JOB_STATUS_NULL);

+        assert(job->job.status == JOB_STATUS_NULL);

         assert(!job->txn);

         BlockDriverState *bs = blk_bs(job->blk);

         bs->job = NULL;

@@ -409,7 +354,7 @@ void block_job_start(BlockJob *job)

     job->pause_count--;

     job->busy = true;

     job->paused = false;

-    block_job_state_transition(job, BLOCK_JOB_STATUS_RUNNING);

+    job_state_transition(&job->job, JOB_STATUS_RUNNING);

     bdrv_coroutine_enter(blk_bs(job->blk), job->co);

 }

@@ -421,7 +366,7 @@ static void block_job_decommission(BlockJob *job)

     job->paused = false;

     job->deferred_to_main_loop = true;

     block_job_txn_del_job(job);

-    block_job_state_transition(job, BLOCK_JOB_STATUS_NULL);

+    job_state_transition(&job->job, JOB_STATUS_NULL);

     block_job_unref(job);

 }

@@ -432,7 +377,7 @@ static void block_job_do_dismiss(BlockJob *job)

 static void block_job_conclude(BlockJob *job)

 {

-    block_job_state_transition(job, BLOCK_JOB_STATUS_CONCLUDED);

+    job_state_transition(&job->job, JOB_STATUS_CONCLUDED);

     if (job->auto_dismiss || !block_job_started(job)) {

         block_job_do_dismiss(job);

     }

@@ -444,7 +389,7 @@ static void block_job_update_rc(BlockJob *job)

         job->ret = -ECANCELED;

     }

     if (job->ret) {

-        block_job_state_transition(job, BLOCK_JOB_STATUS_ABORTING);

+        job_state_transition(&job->job, JOB_STATUS_ABORTING);

     }

 }

@@ -652,7 +597,7 @@ static void block_job_completed_txn_success(BlockJob *job)

     BlockJobTxn *txn = job->txn;

     BlockJob *other_job;

-    block_job_state_transition(job, BLOCK_JOB_STATUS_WAITING);

+    job_state_transition(&job->job, JOB_STATUS_WAITING);

     /*

      * Successful completion, see if there are other running jobs in this

@@ -677,7 +622,7 @@ void block_job_set_speed(BlockJob *job, int64_t speed, Error **errp)

 {

     int64_t old_speed = job->speed;

-    if (block_job_apply_verb(job, BLOCK_JOB_VERB_SET_SPEED, errp)) {

+    if (job_apply_verb(&job->job, JOB_VERB_SET_SPEED, errp)) {

         return;

     }

     if (speed < 0) {

@@ -709,7 +654,7 @@ void block_job_complete(BlockJob *job, Error **errp)

 {

     /* Should not be reachable via external interface for internal jobs */

     assert(job->job.id);

-    if (block_job_apply_verb(job, BLOCK_JOB_VERB_COMPLETE, errp)) {

+    if (job_apply_verb(&job->job, JOB_VERB_COMPLETE, errp)) {

         return;

     }

     if (job->pause_count || job->cancelled || !job->driver->complete) {

@@ -724,7 +669,7 @@ void block_job_complete(BlockJob *job, Error **errp)

 void block_job_finalize(BlockJob *job, Error **errp)

 {

     assert(job && job->job.id);

-    if (block_job_apply_verb(job, BLOCK_JOB_VERB_FINALIZE, errp)) {

+    if (job_apply_verb(&job->job, JOB_VERB_FINALIZE, errp)) {

         return;

     }

     block_job_do_finalize(job);

@@ -735,7 +680,7 @@ void block_job_dismiss(BlockJob **jobptr, Error **errp)

     BlockJob *job = *jobptr;

     /* similarly to _complete, this is QMP-interface only. */

     assert(job->job.id);

-    if (block_job_apply_verb(job, BLOCK_JOB_VERB_DISMISS, errp)) {

+    if (job_apply_verb(&job->job, JOB_VERB_DISMISS, errp)) {

         return;

     }

@@ -745,7 +690,7 @@ void block_job_dismiss(BlockJob **jobptr, Error **errp)

 void block_job_user_pause(BlockJob *job, Error **errp)

 {

-    if (block_job_apply_verb(job, BLOCK_JOB_VERB_PAUSE, errp)) {

+    if (job_apply_verb(&job->job, JOB_VERB_PAUSE, errp)) {

         return;

     }

     if (job->user_paused) {

@@ -768,7 +713,7 @@ void block_job_user_resume(BlockJob *job, Error **errp)

         error_setg(errp, "Can't resume a job that was not paused");

         return;

     }

-    if (block_job_apply_verb(job, BLOCK_JOB_VERB_RESUME, errp)) {

+    if (job_apply_verb(&job->job, JOB_VERB_RESUME, errp)) {

         return;

     }

     block_job_iostatus_reset(job);

@@ -778,7 +723,7 @@ void block_job_user_resume(BlockJob *job, Error **errp)

 void block_job_cancel(BlockJob *job, bool force)

 {

-    if (job->status == BLOCK_JOB_STATUS_CONCLUDED) {

+    if (job->job.status == JOB_STATUS_CONCLUDED) {

         block_job_do_dismiss(job);

         return;

     }

@@ -794,7 +739,7 @@ void block_job_cancel(BlockJob *job, bool force)

 void block_job_user_cancel(BlockJob *job, bool force, Error **errp)

 {

-    if (block_job_apply_verb(job, BLOCK_JOB_VERB_CANCEL, errp)) {

+    if (job_apply_verb(&job->job, JOB_VERB_CANCEL, errp)) {

         return;

     }

     block_job_cancel(job, force);

@@ -859,7 +804,7 @@ BlockJobInfo *block_job_query(BlockJob *job, Error **errp)

     info->speed     = job->speed;

     info->io_status = job->iostatus;

     info->ready     = job->ready;

-    info->status    = job->status;

+    info->status    = job->job.status;

     info->auto_finalize = job->auto_finalize;

     info->auto_dismiss  = job->auto_dismiss;

     info->has_error = job->ret != 0;

@@ -907,7 +852,7 @@ static void block_job_event_completed(BlockJob *job, const char *msg)

 static int block_job_event_pending(BlockJob *job)

 {

-    block_job_state_transition(job, BLOCK_JOB_STATUS_PENDING);

+    job_state_transition(&job->job, JOB_STATUS_PENDING);

     if (!job->auto_finalize && !block_job_is_internal(job)) {

         qapi_event_send_block_job_pending(job_type(&job->job),

                                           job->job.id,

@@ -975,7 +920,6 @@ void *block_job_create(const char *job_id, const BlockJobDriver *driver,

     job->refcnt        = 1;

     job->auto_finalize = !(flags & BLOCK_JOB_MANUAL_FINALIZE);

     job->auto_dismiss  = !(flags & BLOCK_JOB_MANUAL_DISMISS);

-    block_job_state_transition(job, BLOCK_JOB_STATUS_CREATED);

     aio_timer_init(qemu_get_aio_context(), &job->sleep_timer,

                    QEMU_CLOCK_REALTIME, SCALE_NS,

                    block_job_sleep_timer_cb, job);

@@ -1017,7 +961,7 @@ void *block_job_create(const char *job_id, const BlockJobDriver *driver,

 void block_job_early_fail(BlockJob *job)

 {

-    assert(job->status == BLOCK_JOB_STATUS_CREATED);

+    assert(job->job.status == JOB_STATUS_CREATED);

     block_job_decommission(job);

 }

@@ -1077,14 +1021,14 @@ void coroutine_fn block_job_pause_point(BlockJob *job)

     }

     if (block_job_should_pause(job) && !block_job_is_cancelled(job)) {

-        BlockJobStatus status = job->status;

-        block_job_state_transition(job, status == BLOCK_JOB_STATUS_READY ? \

-                                   BLOCK_JOB_STATUS_STANDBY :           \

-                                   BLOCK_JOB_STATUS_PAUSED);

+        JobStatus status = job->job.status;

+        job_state_transition(&job->job, status == JOB_STATUS_READY

+                                        ? JOB_STATUS_STANDBY

+                                        : JOB_STATUS_PAUSED);

         job->paused = true;

         block_job_do_yield(job, -1);

         job->paused = false;

-        block_job_state_transition(job, status);

+        job_state_transition(&job->job, status);

     }

     if (job->driver->resume) {

@@ -1176,7 +1120,7 @@ void block_job_iostatus_reset(BlockJob *job)

 void block_job_event_ready(BlockJob *job)

 {

-    block_job_state_transition(job, BLOCK_JOB_STATUS_READY);

+    job_state_transition(&job->job, JOB_STATUS_READY);

     job->ready = true;

     if (block_job_is_internal(job)) {

diff --git a/include/block/blockjob.h b/include/block/blockjob.h

index 10bd9f7..01cdee6 100644

--- a/include/block/blockjob.h

+++ b/include/block/blockjob.h

@@ -147,9 +147,6 @@ typedef struct BlockJob {

      */

     QEMUTimer sleep_timer;

-    /** Current state; See @BlockJobStatus for details. */

-    BlockJobStatus status;

-

     /** True if this job should automatically finalize itself */

     bool auto_finalize;

diff --git a/include/qemu/job.h b/include/qemu/job.h

index bae2b09..0b78778 100644

--- a/include/qemu/job.h

+++ b/include/qemu/job.h

@@ -41,6 +41,9 @@ typedef struct Job {

     /** The type of this job. */

     const JobDriver *driver;

+    /** Current state; See @JobStatus for details. */

+    JobStatus status;

+

     /** Element of the list of jobs */

     QLIST_ENTRY(Job) job_list;

 } Job;

@@ -90,4 +93,14 @@ Job *job_next(Job *job);

  */

 Job *job_get(const char *id);

+/**

+ * Check whether the verb @verb can be applied to @job in its current state.

+ * Returns 0 if the verb can be applied; otherwise errp is set and -EPERM

+ * returned.

+ */

+int job_apply_verb(Job *job, JobVerb verb, Error **errp);

+

+/* TODO To be removed from the public interface */

+void job_state_transition(Job *job, JobStatus s1);

+

 #endif

diff --git a/job.c b/job.c

index e57303c..b049a32 100644

--- a/job.c

+++ b/job.c

@@ -28,9 +28,63 @@

 #include "qapi/error.h"

 #include "qemu/job.h"

 #include "qemu/id.h"

+#include "trace-root.h"

 static QLIST_HEAD(, Job) jobs = QLIST_HEAD_INITIALIZER(jobs);

+/* Job State Transition Table */

+bool JobSTT[JOB_STATUS__MAX][JOB_STATUS__MAX] = {

+                                    /* U, C, R, P, Y, S, W, D, X, E, N */

+    /* U: */ [JOB_STATUS_UNDEFINED] = {0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0},

+    /* C: */ [JOB_STATUS_CREATED]   = {0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1},

+    /* R: */ [JOB_STATUS_RUNNING]   = {0, 0, 0, 1, 1, 0, 1, 0, 1, 0, 0},

+    /* P: */ [JOB_STATUS_PAUSED]    = {0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0},

+    /* Y: */ [JOB_STATUS_READY]     = {0, 0, 0, 0, 0, 1, 1, 0, 1, 0, 0},

+    /* S: */ [JOB_STATUS_STANDBY]   = {0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0},

+    /* W: */ [JOB_STATUS_WAITING]   = {0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0},

+    /* D: */ [JOB_STATUS_PENDING]   = {0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0},

+    /* X: */ [JOB_STATUS_ABORTING]  = {0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0},

+    /* E: */ [JOB_STATUS_CONCLUDED] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1},

+    /* N: */ [JOB_STATUS_NULL]      = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},

+};

+

+bool JobVerbTable[JOB_VERB__MAX][JOB_STATUS__MAX] = {

+                                    /* U, C, R, P, Y, S, W, D, X, E, N */

+    [JOB_VERB_CANCEL]               = {0, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0},

+    [JOB_VERB_PAUSE]                = {0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0},

+    [JOB_VERB_RESUME]               = {0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0},

+    [JOB_VERB_SET_SPEED]            = {0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0},

+    [JOB_VERB_COMPLETE]             = {0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0},

+    [JOB_VERB_FINALIZE]             = {0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0},

+    [JOB_VERB_DISMISS]              = {0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0},

+};

+

+/* TODO Make static once the whole state machine is in job.c */

+void job_state_transition(Job *job, JobStatus s1)

+{

+    JobStatus s0 = job->status;

+    assert(s1 >= 0 && s1 <= JOB_STATUS__MAX);

+    trace_job_state_transition(job, /* TODO re-enable: job->ret */ 0,

+                               JobSTT[s0][s1] ? "allowed" : "disallowed",

+                               JobStatus_str(s0), JobStatus_str(s1));

+    assert(JobSTT[s0][s1]);

+    job->status = s1;

+}

+

+int job_apply_verb(Job *job, JobVerb verb, Error **errp)

+{

+    JobStatus s0 = job->status;

+    assert(verb >= 0 && verb <= JOB_VERB__MAX);

+    trace_job_apply_verb(job, JobStatus_str(s0), JobVerb_str(verb),

+                         JobVerbTable[verb][s0] ? "allowed" : "prohibited");

+    if (JobVerbTable[verb][s0]) {

+        return 0;

+    }

+    error_setg(errp, "Job '%s' in state '%s' cannot accept command verb '%s'",

+               job->id, JobStatus_str(s0), JobVerb_str(verb));

+    return -EPERM;

+}

+

 JobType job_type(const Job *job)

 {

     return job->driver->job_type;

@@ -81,6 +135,8 @@ void *job_create(const char *job_id, const JobDriver *driver, Error **errp)

     job->driver        = driver;

     job->id            = g_strdup(job_id);

+    job_state_transition(job, JOB_STATUS_CREATED);

+

     QLIST_INSERT_HEAD(&jobs, job, job_list);

     return job;

diff --git a/qapi/block-core.json b/qapi/block-core.json

index cab0697..f2ed7a8 100644

--- a/qapi/block-core.json

+++ b/qapi/block-core.json

@@ -1068,9 +1068,9 @@

   'data': ['commit', 'stream', 'mirror', 'backup'] }

 ##

-# @BlockJobVerb:

+# @JobVerb:

 #

-# Represents command verbs that can be applied to a blockjob.

+# Represents command verbs that can be applied to a job.

 #

 # @cancel: see @block-job-cancel

 #

@@ -1088,14 +1088,14 @@

 #

 # Since: 2.12

 ##

-{ 'enum': 'BlockJobVerb',

+{ 'enum': 'JobVerb',

   'data': ['cancel', 'pause', 'resume', 'set-speed', 'complete', 'dismiss',

            'finalize' ] }

 ##

-# @BlockJobStatus:

+# @JobStatus:

 #

-# Indicates the present state of a given blockjob in its lifetime.

+# Indicates the present state of a given job in its lifetime.

 #

 # @undefined: Erroneous, default state. Should not ever be visible.

 #

@@ -1134,7 +1134,7 @@

 #

 # Since: 2.12

 ##

-{ 'enum': 'BlockJobStatus',

+{ 'enum': 'JobStatus',

   'data': ['undefined', 'created', 'running', 'paused', 'ready', 'standby',

            'waiting', 'pending', 'aborting', 'concluded', 'null' ] }

@@ -1184,7 +1184,7 @@

   'data': {'type': 'str', 'device': 'str', 'len': 'int',

            'offset': 'int', 'busy': 'bool', 'paused': 'bool', 'speed': 'int',

            'io-status': 'BlockDeviceIoStatus', 'ready': 'bool',

-           'status': 'BlockJobStatus',

+           'status': 'JobStatus',

            'auto-finalize': 'bool', 'auto-dismiss': 'bool',

            '*error': 'str' } }

@@ -2416,7 +2416,7 @@

 # QEMU 2.12+ job lifetime management semantics.

 #

 # This command will refuse to operate on any job that has not yet reached

-# its terminal state, BLOCK_JOB_STATUS_CONCLUDED. For jobs that make use of

+# its terminal state, JOB_STATUS_CONCLUDED. For jobs that make use of the

 # BLOCK_JOB_READY event, block-job-cancel or block-job-complete will still need

 # to be used as appropriate.

 #

diff --git a/tests/test-blockjob.c b/tests/test-blockjob.c

index b820261..6ccd585 100644

--- a/tests/test-blockjob.c

+++ b/tests/test-blockjob.c

@@ -211,7 +211,7 @@ static CancelJob *create_common(BlockJob **pjob)

     job = mk_job(blk, "Steve", &test_cancel_driver, true,

                  BLOCK_JOB_MANUAL_FINALIZE | BLOCK_JOB_MANUAL_DISMISS);

     block_job_ref(job);

-    assert(job->status == BLOCK_JOB_STATUS_CREATED);

+    assert(job->job.status == JOB_STATUS_CREATED);

     s = container_of(job, CancelJob, common);

     s->blk = blk;

@@ -223,15 +223,14 @@ static void cancel_common(CancelJob *s)

 {

     BlockJob *job = &s->common;

     BlockBackend *blk = s->blk;

-    BlockJobStatus sts = job->status;

+    JobStatus sts = job->job.status;

     block_job_cancel_sync(job);

-    if ((sts != BLOCK_JOB_STATUS_CREATED) &&

-        (sts != BLOCK_JOB_STATUS_CONCLUDED)) {

+    if (sts != JOB_STATUS_CREATED && sts != JOB_STATUS_CONCLUDED) {

         BlockJob *dummy = job;

         block_job_dismiss(&dummy, &error_abort);

     }

-    assert(job->status == BLOCK_JOB_STATUS_NULL);

+    assert(job->job.status == JOB_STATUS_NULL);

     block_job_unref(job);

     destroy_blk(blk);

 }

@@ -253,7 +252,7 @@ static void test_cancel_running(void)

     s = create_common(&job;;

     block_job_start(job);

-    assert(job->status == BLOCK_JOB_STATUS_RUNNING);

+    assert(job->job.status == JOB_STATUS_RUNNING);

     cancel_common(s);

 }

@@ -266,11 +265,11 @@ static void test_cancel_paused(void)

     s = create_common(&job;;

     block_job_start(job);

-    assert(job->status == BLOCK_JOB_STATUS_RUNNING);

+    assert(job->job.status == JOB_STATUS_RUNNING);

     block_job_user_pause(job, &error_abort);

     block_job_enter(job);

-    assert(job->status == BLOCK_JOB_STATUS_PAUSED);

+    assert(job->job.status == JOB_STATUS_PAUSED);

     cancel_common(s);

 }

@@ -283,11 +282,11 @@ static void test_cancel_ready(void)

     s = create_common(&job;;

     block_job_start(job);

-    assert(job->status == BLOCK_JOB_STATUS_RUNNING);

+    assert(job->job.status == JOB_STATUS_RUNNING);

     s->should_converge = true;

     block_job_enter(job);

-    assert(job->status == BLOCK_JOB_STATUS_READY);

+    assert(job->job.status == JOB_STATUS_READY);

     cancel_common(s);

 }

@@ -300,15 +299,15 @@ static void test_cancel_standby(void)

     s = create_common(&job;;

     block_job_start(job);

-    assert(job->status == BLOCK_JOB_STATUS_RUNNING);

+    assert(job->job.status == JOB_STATUS_RUNNING);

     s->should_converge = true;

     block_job_enter(job);

-    assert(job->status == BLOCK_JOB_STATUS_READY);

+    assert(job->job.status == JOB_STATUS_READY);

     block_job_user_pause(job, &error_abort);

     block_job_enter(job);

-    assert(job->status == BLOCK_JOB_STATUS_STANDBY);

+    assert(job->job.status == JOB_STATUS_STANDBY);

     cancel_common(s);

 }

@@ -321,18 +320,18 @@ static void test_cancel_pending(void)

     s = create_common(&job;;

     block_job_start(job);

-    assert(job->status == BLOCK_JOB_STATUS_RUNNING);

+    assert(job->job.status == JOB_STATUS_RUNNING);

     s->should_converge = true;

     block_job_enter(job);

-    assert(job->status == BLOCK_JOB_STATUS_READY);

+    assert(job->job.status == JOB_STATUS_READY);

     block_job_complete(job, &error_abort);

     block_job_enter(job);

     while (!s->completed) {

         aio_poll(qemu_get_aio_context(), true);

     }

-    assert(job->status == BLOCK_JOB_STATUS_PENDING);

+    assert(job->job.status == JOB_STATUS_PENDING);

     cancel_common(s);

 }

@@ -345,21 +344,21 @@ static void test_cancel_concluded(void)

     s = create_common(&job;;

     block_job_start(job);

-    assert(job->status == BLOCK_JOB_STATUS_RUNNING);

+    assert(job->job.status == JOB_STATUS_RUNNING);

     s->should_converge = true;

     block_job_enter(job);

-    assert(job->status == BLOCK_JOB_STATUS_READY);

+    assert(job->job.status == JOB_STATUS_READY);

     block_job_complete(job, &error_abort);

     block_job_enter(job);

     while (!s->completed) {

         aio_poll(qemu_get_aio_context(), true);

     }

-    assert(job->status == BLOCK_JOB_STATUS_PENDING);

+    assert(job->job.status == JOB_STATUS_PENDING);

     block_job_finalize(job, &error_abort);

-    assert(job->status == BLOCK_JOB_STATUS_CONCLUDED);

+    assert(job->job.status == JOB_STATUS_CONCLUDED);

     cancel_common(s);

 }

diff --git a/trace-events b/trace-events

index ed71f44..2507e13 100644

--- a/trace-events

+++ b/trace-events

@@ -104,6 +104,10 @@ gdbstub_err_invalid_rle(void) "got invalid RLE sequence"

 gdbstub_err_checksum_invalid(uint8_t ch) "got invalid command checksum digit: 0x%02x"

 gdbstub_err_checksum_incorrect(uint8_t expected, uint8_t got) "got command packet with incorrect checksum, expected=0x%02x, received=0x%02x"

+# job.c

+job_state_transition(void *job,  int ret, const char *legal, const char *s0, const char *s1) "job %p (ret: %d) attempting %s transition (%s-->%s)"

+job_apply_verb(void *job, const char *state, const char *verb, const char *legal) "job %p in state %s; applying verb %s (%s)"

+

 ### Guest events, keep at bottom

-- 

1.8.3.1